Vacuum medical apparatus



June 24, 1930. vo, SIANIDE 1,767,320

VACUUM MEDICAL APPARATUS Filed Feb. 7, 1928 Patentecl June 24,1930 i i. f.

UNITED s'rA'ri-:sg PATENfTj-OFFICE c, y

VACUUM MEDICAL Armiimfins'v Appiieation med February` 7; 192s, serial No. 252,569, ,and errance December 11e2'7.-

This invention relates to vacuum pumps situated the deliveryvalve 17, pressedby a and it has for its object a vacuum apparatus spring`18 a'djvustableby a screw 19. The air adapted to create at will a continuous vacuum forced vout by the motion ofthe diaphragm: or, on t-he contrary, a. series of pulsations in escapes throughV the oriiice 20'.

the same piping system connected to various p The casing 15 is also provided with utilization apparatus for medical treatment. outlet oriice 21-'Which can "be closed to la According to this invention, the appara# variable extentA by 'the operation o'fa" split tus is constituted by an air pump, preferably screw 22. p' j f Y p l I` of thediaphragm type, providedwith dec inally," the. bottom of this casing' 15is vices permitting itto be transformed atwill closed f by van extensible diaphragm 23, 60

' into a pulsating device by the simple operkclamped ^by a plug24in kwhich is adapted ation of a lever, without the necessity of to be screwed `an adjusting screw 25 the funciXing on or taking olf any part. The invention of which will be explained hereafter. tion also concerns several details of construc- This screw 25 is operated by hand by Vmeans tion which are directed to a greater eliiciency of a lever 26- adapted to move under a bridgand convenience in working the said pump ing piece 27 connecting the two front legs of and which will be best understood by the dethe base 1. YThis bridging piece'may be protailed description given hereafter with ref-V vvided with regulating notches 28,29 in which erence to the appended drawing, in which: the lever 26 enters owing to itsyspringiness.

' Fig. .l is a front view of the apparatus, The operation is as follows: 70 and The crank 5 is drivenby the motor 2 and Fig. 2 is avert-ical cross-section on line rotates, lifting and loweringpalternately the A--A of Fig. l. c diaphragm 10. The connecting rod 7 being The apparatus consists of a base 1 suprelatively long, kitsobliquityis not`lobjection- V porting an electric motor 2 started by a able, so that there is noneed to provide a 75.

'35 provided with a circular disc 9 on which is thereby preventing the valve 13 from fitting switch 3 of any suitable description. To the joint between the disc 9 and the lower porinotor 2 is connected a reducing gearing 4, tion of the connecting rod. In' this manner of the Worm type, of well-known construca series of pulsations are produced in the con- A tion and requiring therefore no further deical cup 12 and, if the valve 13vis`free to seat 3U scription. This gearing drives a crank disc itself the apparatus creates a vacuum in the 80 5 provided witha pin 6 on which is mounted, pipe 16, a lvacuum which 'can be adjusted by by means of a ball bearing 8, the connecting the operation of the screw 22. v 4 rod 7. l By manipulating the lever 26, the screw The lower end of the connecting rod 7 is 25 is rotatedl and lifts the vdiaphragm 23,

5 tightly clamped aiexible diaphragm 10 (for onkits seat. YIn these conditions the appaf instance, of indiarubber), by means of the ratus simply creates in the pipe'16 a. series counter-disc 11. The diaphragm 10 `fits in of pulsations with vreduced pressure.

a conical cup 12, and it is clampedV at the By bringing back the lever 26 to its first edge in an air-tight manner between t-he edged position, the pump is again caused to work 90 of the cup 12 and the edge of an opening proas a vacuum pump, the diaphragm 23 allowvided in the base 1 .for the free passage of "lng the valve 13 to work freely. The two the connecting rod 7 and of the clamping notches 28 and 29of the bridging piece 27 f disc 9-11. y correspond to these two modes of Working.

4" At the bottom of the cup 12, and placed I claim: 9D. concentrically, is situated a suction valve 13, 1. A vacuum apparatus for medical treat* closed by a spring 14, and housed in a cylinment, comprising an air pump, a vacuum drical caslng 15 into which opens the suction chamber related thereto and provided Wit-h tube 16. Y c an inlet and avvalve-'cont-rolled outlet and 100 On one slde of the seat ofthe valve 13 is having at its bottom a plug anda flexible diaphragm above t-he same to form an air-tight joint, a normally-closed suction valve in said chamber above said diaphragm to control communication between the chamber and its .5 outlet, and an endwise-movable member mounted in said plug in line with the suction valve to lift said diaphragm and thereby raise said valve into open position.

2. A vacuum apparat-us for medical treatment, comprising an air pump embodying a cup, a flexible diaphragm mounted therein, and a reciprocating piston connected to the diaphragm; a suction chambereonneoted to said cup and provided with an inlet and a valve-controlled outlet and having at its bot-v tom a plug and a flexible ,diaphragm above the same to form an air-tight joint;a normally-,closed sue-tion valve in said chamber above the last-named diaphragm to control communication between the `Chamber and its outlet; and an endwise-movable member mounted in `said plug in line with the suction valve to lift said last-named diaphragm and thereby raise said valve into open position. In testimony whereof I afx my signature.

@RESTE SINANIDE. 

